An old Oklahoma farmer got pulled over by an Arizona State trooper for speeding. The trooper started to lecture the farmer about his speed and in general, began to throw his weight around to try to make the farmer uncomfortable.

Finally, the trooper got around to writing out the ticket. As he was doing it, he kept swatting at some flies that were buzzing around his head.

The farmer said, "Havin' some problems with circle flies there, are Ya?"

The trooper stopped writing the ticket and said, "Well, yeah, if that's what they are; I never heard of circle flies."

So the old Oklahoma farmer says, "Well, circle flies are common on farms. See, they're called circle flies 'cause they're almost always found circlin' around the back end of a horse.

The trooper says, "Oh," and goes back to writing the ticket. Then after a minute he stops and says, "Hey...wait a minute, are you trying to call me a horse's ass?

The farmer says, "Oh no, officer. I have too much respect for law enforcement and police officers to even think about calling you a horse's ass."

The trooper says, "Well, that's a good thing," and goes back to writing the ticket.

After a long pause, the farmer says, "Hard to fool them flies, though."